List questions from pi

Published on 13 Apr 2026 - 22:48

222

Views

Help finding the formula for this sequence {$23$, $114$, $187$, $473$, $2792$, $5624$, $19640$, $75884$, $187211$, $479798$, $1452835$, $5102237$...}

Published on 17 Apr 2026 - 12:44

987

Views

Does decimal point count as a digit of pi?

Published on 10 Apr 2026 - 16:07

864

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Definition of the approx. symbol

Published on 15 Apr 2026 - 2:48

523

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Proof that $ \pi > 2 \cdot \sqrt{2}$ and $ \pi > 3 $

Published on 14 Apr 2026 - 21:41

504

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Who was Dalzell? $\pi$ < 22/7

Published on 13 Apr 2026 - 10:04

67

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Determination of $\pi$

Published on 30 Apr 2026 - 9:57

167

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Sum to Infinity of Trigonometry to $\pi$

Published on 09 Apr 2026 - 9:29

87

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How to use infinite series to bound $\pi$.

Published on 08 Apr 2026 - 22:22

1.6k

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Relationship between Catalan's constant and $\pi$

Published on 25 Apr 2026 - 11:54

158

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Sum of Infinity of Trigo to Pi

Published on 11 Apr 2026 - 22:04

70

Views

Why do $4\cdot 2^n\sin\frac{45}{2^n}$, $2\cdot 2^n\sin\frac{90}{2^n}$, and $1\cdot 2^n\sin\frac{180}{2^n}$ all tend to $\pi$?

Published on 16 Apr 2026 - 17:41

184

Views

A Series for $\pi$

Published on 30 Apr 2026 - 8:19

119

Views

Looking for a proof that $\pi$ is irrational using a series representation.

Published on 13 Apr 2026 - 2:46

306

Views

Using a gamblers race to approximate $\pi$

Published on 10 Apr 2026 - 4:27

List Question

Why does this 2Pi-Periodic function looks like this?

Help finding the formula for this sequence {$23$, $114$, $187$, $473$, $2792$, $5624$, $19640$, $75884$, $187211$, $479798$, $1452835$, $5102237$...}

Does decimal point count as a digit of pi?

Definition of the approx. symbol

Proof that $ \pi > 2 \cdot \sqrt{2}$ and $ \pi > 3 $

Who was Dalzell? $\pi$ < 22/7

Determination of $\pi$

Sum to Infinity of Trigonometry to $\pi$

How to use infinite series to bound $\pi$.

Relationship between Catalan's constant and $\pi$

Sum of Infinity of Trigo to Pi

Why do $4\cdot 2^n\sin\frac{45}{2^n}$, $2\cdot 2^n\sin\frac{90}{2^n}$, and $1\cdot 2^n\sin\frac{180}{2^n}$ all tend to $\pi$?

A Series for $\pi$

Looking for a proof that $\pi$ is irrational using a series representation.

Using a gamblers race to approximate $\pi$

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